> ## Documentation Index > Fetch the complete documentation index at: https://docs.usecharlie.ai/llms.txt > Use this file to discover all available pages before exploring further. # Introduction > The Shopify fulfillment app that decides where every order ships from Charlie extends Shopify's fulfillment engine with location metadata, constraint rules, and ranked routing — so every order ships from the right place. Use it to prevent stock-outs, balance warehouse load, prioritize ship-from-store, and protect safety stock. ## Start here Install Charlie from the Shopify App Store in one click. Set up locations, constraints, and routing in under 10 minutes. ## Explore the product Extend Shopify locations with types, tags, and daily order limits. Block locations from fulfilling specific orders based on product, customer, or cart conditions. Rank locations so orders ship from the right place by priority, capacity, or inventory. Keep safety stock, sync to theme metafields, and avoid overselling. ## Guides Launch a ship-from-store program end-to-end. Keep warehouses at the top of your routing order. ## Stay in the loop What's new in Charlie. Reach the Charlie team.